CN102349343A - Radio base station - Google Patents

Radio base station Download PDF

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Publication number
CN102349343A
CN102349343A CN2010800112295A CN201080011229A CN102349343A CN 102349343 A CN102349343 A CN 102349343A CN 2010800112295 A CN2010800112295 A CN 2010800112295A CN 201080011229 A CN201080011229 A CN 201080011229A CN 102349343 A CN102349343 A CN 102349343A
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confirmation signal
phich
signal channel
resource
sending
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大久保尚人
石井启之
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NTT Docomo Inc
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NTT Docomo Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1861Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0016Time-frequency-code
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosed radio base station (eNB) is provided with a Physical Uplink Shared Channel (PUSCH) resource allocator (11A) which allocates PUSCH resources to a PUSCH of a mobile station (UE); a Physical Hybrid-ARQ Indicator Channel (PHICH) resource allocator (11B) which allocates a first frequency direction resource and a first code direction resource to a PHICH based on identifying information of a PUSCH resource; and a notifier (12) which notifies the mobile station (UE) of the PUSCH resource. The PHICH resource allocator (11B) changes the frequency direction resource and code direction resource allocated to a PHICH from the first frequency direction resource and the first code direction resource to a second frequency direction resource and a second code direction resource when the usage conditions of the code direction resource of the first frequency direction resource meet predetermined conditions.

Description

The wireless base station
Technical field
The present invention relates to the wireless base station.
Background technology
The LTE that in 3GPP, stipulates (Long Term Evolution; Long Term Evolution) in the mobile communication system of mode; Wireless base station eNB is via PHICH (Physical Hybrid-ARQ Indicator Channel (physical mixed ARQ indicator channel); Send to the confirmation signal channel) mobile station UE is sent send to confirmation signal (ACK/NACK) for the upstream data. signals of sending via PUSCH (Physical Uplink Shared Chennel (physical uplink link sharing channel), upstream data. signals channel) through this mobile station UE.
Summary of the invention
The problem that invention will solve
But in 3GPP, owing to do not stipulate to this PHICH method of allocating resources, therefore in above-mentioned mobile communication system, existence may not be to the PHICH problem points of Resources allocation suitably.
Therefore, the present invention is in view of above-mentioned problem and accomplishing, its purpose be to provide a kind of can be to the PHICH wireless base station of Resources allocation suitably.
Be used to solve the means of problem
First characteristic of the present invention is the wireless base station, and its purport is, comprising: upstream data. signals channel resource allocation portion constitutes the upstream data. signals channel allocation upstream data. signals channel resource to the upstream data. signals of sending travelling carriage; Send to confirmation signal channel resource allocation portion; Constitute identifying information according to said upstream data. signals channel resource, to send for said upstream data. signals send to confirmation signal send to confirmation signal channel allocation first frequency direction resource and first yard direction resource; And notice portion; Notify said upstream data. signals channel resource to said travelling carriage; The said confirmation signal channel resource allocation portion that sends to constitutes; The behaviour in service of the sign indicating number direction resource in said first frequency direction resource satisfies under the situation of rated condition; With distributing to the said frequency direction resource and sign indicating number direction resource of sending to the confirmation signal channel, change to second frequency direction resource and second yard direction resource from said first frequency direction resource and said first yard direction resource.
The effect of invention
As discussed above, according to the present invention, can provide a kind of can be to the PHICH wireless base station of Resources allocation suitably.
Description of drawings
Fig. 1 is the overall structure figure of the mobile communication system of first execution mode of the present invention.
Fig. 2 is the functional-block diagram of the wireless base station of first execution mode of the present invention.
Fig. 3 is used to illustrate that the PHICH of wireless base station of first execution mode of the present invention is with the figure of the distribution method of resource.
Fig. 4 is the figure of notion that is used to illustrate the employed PHICH group in wireless base station of first execution mode of the present invention.
Fig. 5 is the figure of notion that is used to illustrate the employed PHICH sequential in wireless base station of first execution mode of the present invention.
Fig. 6 is used to illustrate that the PHICH of wireless base station of first execution mode of the present invention is with the figure of the distribution method of resource.
Fig. 7 is used to illustrate that the PHICH of wireless base station of first execution mode of the present invention is with the figure of the distribution method of resource.
Fig. 8 is used to illustrate that the PHICH of wireless base station of first execution mode of the present invention is with the figure of the distribution method of resource.
Fig. 9 is used to illustrate that the PHICH of wireless base station of first execution mode of the present invention is with the figure of the distribution method of resource.
Figure 10 is the flow chart of action of the wireless base station of expression first execution mode of the present invention.
Figure 11 is used to illustrate that the PHICH of wireless base station of variation 1 of the present invention is with the figure of the distribution method of resource.
Embodiment
(structure of the mobile communication system of first execution mode of the present invention)
Referring to figs. 1 through Fig. 9, the structure of the mobile communication system of first execution mode of the present invention is described.
The mobile communication system of this execution mode is the mobile communication system of LTE mode; In the mobile communication system of this execution mode; As shown in Figure 1; Mobile station UE is sent upstream data. signals through PUSCH to wireless base station eNB, and wireless base station eNB sends through PHICH and sends to confirmation signal (ACK/NACK) for this upstream data. signals.
In addition, wireless base station eNB sends downgoing control signal through PDCCH (Physical Downlink Control Channel, physical downlink control channel) to mobile station UE.
As shown in Figure 2, wireless base station eNB comprises PUSCH resource allocation section 11A, PHICH resource allocation section 11B, PDCCH sending part 12, PUSCH acceptance division 13, PHICH sending part 14.
PUSCH resource allocation section 11A distributes PUSCH resource (upstream data. signals channel resource) to PUSCH.
For example, PUSCH resource allocation section 11A to this PUSCH distribute subframe as the time orientation resource, as the Resource Block (RB:Resource Block) of frequency direction resource.
Here, Resource Block is made up of 7 ODFM code elements and 12 subcarriers.
PHICH resource allocation section 11B distributes the resource that comprises frequency direction resource and sign indicating number direction resource to PHICH.
Shown in Fig. 3 (a) and Fig. 3 (b); PHICH resource allocation section 11B distributes an OFDM code element (situation of PHICH interval=1 of the front end in each sub-frame to PHICH; Be the situation of normal duration (Normal Duration)); The perhaps resource in three OFDM code elements of the front end in each sub-frame (PHICH is interval=3, promptly expand the duration situation of (Extended Duration)).
As shown in Figure 4, the frequency direction resource that can distribute to PHICH is the PHICH group (sending to the confirmation signal channel group) that is made up of a plurality of resource element groups (for example three resource element groups).
Here, resource element group (REG:Resource Element Group) is made up of four continuous resource elements (RE:Resource Element).In addition, resource element is made up of an OFDM code element and a subcarrier.
Several N of PHICH group PHICH GroupDetermine by (formula 1).
[formula 1]
Figure BDA0000090254990000031
- (Formula 1)
Here, N RB DLBe the number of the Resource Block in the system bandwidth, N gIt is the parameter (for example, 1/6,1/2,1,2) that is used to determine the number of PHICH group.
For example, be " 5MHz " in system bandwidth, and used under the situation of normal cyclic prefix, because N RB DLTherefore be " 25 ", with N gBe made as under the situation of " 1 ", PHICH group number is " 4 ".
In addition, be " 20MHz " in system bandwidth, and used under the situation of normal cyclic prefix, because N RB DLTherefore be " 100 ", with N gBe made as under the situation of " 1/6 ", PHICH group number is " 3 ".
In the example of Fig. 4, several N of PHICH group are shown PHICH GroupSituation for " 3 ".Below, for the purpose of simplifying the description,, suppose that the number of PHICH group is " 3 " as an example.
In addition, shown in Fig. 3 (a) and Fig. 3 (b), in order to obtain frequency diversity gain, in system bandwidth integral body, roughly uniformly-spaced to shine upon the PHICH group.
In addition, the sign indicating number direction resource that can distribute to PHICH is the orthogonal sequence (for example, Walsh Hadamard sequence) in the PHICH group.
This orthogonal sequence (being also referred to as the PHICH sequence) in PHICH group reusable to I phase and Q phase (it is multiplexing to carry out I/Q).Specifically, as shown in Figure 5, in the PHICH group, can distinguish multiplexing N mutually with Q mutually to I SF PHICHIndividual PHICH sequence.For example, N SF PHICHFor as follows.
[formula 2]
Figure BDA0000090254990000041
That is, the resource (PHICH resource) of distributing to PHICH is confirmed through the PHICH serial number that is used to discern the PHICH sets of numbers of PHICH group and is used to discern the PHICH sequence.
In addition, PHICH resource allocation section 11B distributes first frequency direction resource and first yard direction resource according to the Resource Block number (identifying information of upstream data. signals channel resource) of the Resource Block that is used for discerning the PUSCH resource to PHICH.
Specifically, PHICH resource allocation section 11B discerns the minimum Resource Block number (RB index) of Resource Block number of distributing to the Resource Block of PUSCH as the frequency direction resource according to being used for, and the resource of PHICH is distributed in decision.
For example shown in Figure 6; PHICH resource allocation section 11B according to be used for discerning distribute to mobile station UE #1 as the frequency direction resource the Resource Block number #0 of Resource Block of PUSCH to the minimum Resource Block number #0 of #2, the resource of the PHICH of mobile station UE #1 is distributed in decision.
In addition, PHICH resource allocation section 11B according to be used for discerning distribute to mobile station UE #2 as the frequency direction resource the Resource Block number #3 of Resource Block of PUSCH to the minimum Resource Block number #3 of #6, the resource of the PHICH of mobile station UE #2 is distributed in decision.
In addition, PHICH resource allocation section 11B according to be used for discerning distribute to mobile station UE #3 as the frequency direction resource the Resource Block number #7 of Resource Block of PUSCH to the minimum Resource Block number #7 of #11, the resource of the PHICH of mobile station UE #3 is distributed in decision.
In addition; PHICH resource allocation section 11B according to be used for discerning distribute to mobile station UE #4 as the frequency direction resource the Resource Block number #12 of Resource Block of PUSCH to the minimum Resource Block number #12 of #15, the resource of the PHICH of mobile station UE #4 is distributed in decision.
And then; PHICH resource allocation section 11B according to be used for discerning distribute to mobile station UE #5 as the frequency direction resource the Resource Block number #16 of Resource Block of PUSCH to the minimum Resource Block number #16 of #18, the resource of the PHICH of mobile station UE #5 is distributed in decision.
As shown in Figure 7, PHICH resource allocation section 11B is as first frequency direction resource and first yard direction resource, and the PHICH of mobile station UE #1 is distributed PHICH group #0 and PHICH sequence #0 corresponding to Resource Block number #0.
In addition, PHICH resource allocation section 11B is as first frequency direction resource and first yard direction resource, and the PHICH of mobile station UE #2 is distributed PHICH group #0 and PHICH sequence #1 corresponding to Resource Block number #3.
In addition, PHICH resource allocation section 11B is as first frequency direction resource and first yard direction resource, and the PHICH of mobile station UE #3 is distributed PHICH group #1 and PHICH sequence #2 corresponding to Resource Block number #7.
In addition, PHICH resource allocation section 11B is as first frequency direction resource and first yard direction resource, and the PHICH of mobile station UE #4 is distributed PHICH group #0 and PHICH sequence #4 corresponding to Resource Block number #12.
And then PHICH resource allocation section 11B is as first frequency direction resource and first yard direction resource, and the PHICH of mobile station UE #5 is distributed PHICH group #1 and PHICH sequence #5 corresponding to Resource Block number #16.
Like this, according to the minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH, the resource (PHICH group and PHICH sequence) of PHICH is distributed in decision.
But the resource (PHICH group and PHICH sequence) of distributing to PHICH can be changed by the cyclic shift index (Cyclic Shift Index) of " demodulated reference signal " that be used for demodulation PUSCH signal (upstream data. signals) that can be through the PDCCH notice.In addition, said example has been supposed the situation of cyclic shift index for " 0 ".
Specifically, when each cyclic shift index increased " n ", PHICH sets of numbers and PHICH serial number increased " n ".
For example shown in Figure 8, the Resource Block number minimum at the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH is " 0 ", and the cyclic shift index be under the situation of " 0 ", distributes PHICH to organize #0 and PHICH sequence #0 to PHICH.
With respect to this, the Resource Block number minimum at the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH is " 0 ", and the cyclic shift index be under the situation of " 1 ", distributes PHICH to organize #1 and PHICH sequence #1 to PHICH.
In addition, the Resource Block number minimum at the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH is " 17 ", and the cyclic shift index be under the situation of " 0 ", distributes PHICH to organize #2 and PHICH sequence #5 to PHICH.
With respect to this, the Resource Block number minimum at the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH is " 17 ", and the cyclic shift index be under the situation of " 2 ", distributes PHICH to organize #1 and PHICH sequence #7 to PHICH.
Be used to avoid a PHICH resource to be assigned to the situation of a plurality of PHICH (conflict of PHICH resource) through such cyclic shift to the change hypothesis of the resource of distributing to PHICH.
For example; The Resource Block number minimum at the Resource Block number of the Resource Block that is used for discerning the PUSCH that distributes to mobile station UE #1 is " 0 "; And the minimum Resource Block number of Resource Block number that is used for discerning the Resource Block of the PUSCH that distributes to mobile station UE #2 is under the situation of " 24 "; The PHICH of mobile station UE #1 and the PHICH of mobile station UE #2 are distributed PHICH group #0 and PHICH sequence #0; Therefore can change the PHICH resource through cyclic shift, thereby avoid the conflict of this PHICH resource.
Here; The behaviour in service of the PHICH sequence in PHICH group (first frequency direction resource) (sign indicating number direction resource) satisfies under the situation of rated condition; PHICH resource allocation section 11B is through above-mentioned cyclic shift; PHICH group and the PHICH sequence of PHICH will be distributed to; From first frequency direction resource and first yard direction resource, change to second frequency direction resource and second yard direction resource.
Shown in the example of Fig. 8; The behaviour in service of the PHICH sequence in PHICH group #0 (first frequency direction resource) (sign indicating number direction resource) satisfies under the situation of rated condition; PHICH resource allocation section 11B also can be through above-mentioned cyclic shift; The interior PHICH sequence of PHICH group of PHICH will be distributed to; From the interior PHICH sequence #0 (first yard direction resource) of PHICH group #0 (first frequency direction resource), change to the PHICH sequence #1 (second yard direction resource) in the PHICH group #1 (second frequency direction resource).
In addition; Shown in the example of Fig. 8; The behaviour in service of the PHICH sequence in PHICH group #2 (first frequency direction resource) (sign indicating number direction resource) satisfies under the situation of rated condition; PHICH resource allocation section 11B also can be through above-mentioned cyclic shift; The interior PHICH sequence of PHICH group of PHICH will be distributed to; From PHICH group #2 (first frequency direction resource) and PHICH sequence #5 (first yard direction resource), change to PHICH group #1 (second frequency direction resource) and PHICH sequence #7 (second yard direction resource).
Here; In PHICH group (for example; PHICH organizes #0) in the PHICH sequence use number as under the situation more than the stated number; PHICH resource allocation section 11B also can will distribute to the interior PHICH sequence of PHICH group of PHICH; From PHICH group (for example; PHICH organizes #0) in a PHICH sequence (PHICH sequence #0) change to the 2nd PHICH sequence (PHICH sequence #1) in the 2nd PHICH group (for example, PHICH group #1).
In addition; In PHICH group (for example; PHICH organizes #0) in the PHICH sequence be assigned under the situation of other PHICH; PHICH resource allocation section 11B also can will distribute to the interior PHICH sequence of PHICH group of PHICH; From PHICH group (for example; PHICH organizes #0) in a PHICH sequence (PHICH sequence #0) change to the 2nd PHICH sequence (PHICH sequence #1) in the 2nd PHICH group (for example, PHICH group #1).
And then; PHICH sequence in a PHICH of the change object as above-mentioned group (for example exists under a plurality of situation; PHICH sequence #5 in PHICH sequence #0 in the PHICH group #0 and the PHICH group #2); PHICH resource allocation section 11B also can preferentially change the PHICH sequence (for example, the PHICH sequence #0 in the PHICH group #0) in the PHICH group of distributing to other PHICH.
In addition; PHICH sequence in a PHICH of the change object as above-mentioned group (for example exists under a plurality of situation; PHICH sequence #5 in PHICH sequence #0 in the PHICH group #0 and the PHICH group #2); PHICH resource allocation section 11B also can preferentially change the maximum interior PHICH sequence (for example, the PHICH sequence #0 in the PHICH group #0) of PHICH group of use number of PHICH sequence.
In addition; PHICH sequence in a PHICH of the change object as above-mentioned group (for example exists under a plurality of situation; PHICH sequence #5 in PHICH sequence #0 in the PHICH group #0 and the PHICH group #2); PHICH resource allocation section 11B also can preferentially change the interior PHICH sequence (for example, the PHICH sequence #0 in the PHICH group #0) of PHICH group that the PHICH sequence is multiplexed to I phase and Q phase.
And then; PHICH sequence in a PHICH of the change object as above-mentioned group (for example exists under a plurality of situation; PHICH sequence #5 in PHICH sequence #0 in the PHICH group #0 and the PHICH group #2); The PHICH resource allocation section also can preferentially change the maximum interior PHICH sequence (for example, the PHICH sequence #0 in the PHICH group #0) of PHICH group of aggregate value of transmitted power.
In addition, the PHICH group (for example, PHICH group #1) that PHICH resource allocation section 11B also can be minimum with the aggregate value of transmitted power is as the PHICH group (the 2nd PHICH group) of above-mentioned change destination.
In addition, the PHICH group that PHICH resource allocation section 11B can be not multiplexing with the I/Q of generation PHICH sequence under the situation of the PHICH sequence in having changed PHICH group yet is as the PHICH group (the 2nd PHICH group) of above-mentioned change destination.
In addition, PHICH resource allocation section 11B can not organize the PHICH group (the 2nd PHICH group) as above-mentioned change destination with the PHICH that clashes with the PHICH sequence of distributing to other PHICH under the situation of the PHICH sequence in having changed PHICH group yet.
PDCCH sending part 12 sends downgoing control signal through PDCCH to mobile station UE.
Specifically, PDCCH sending part 12 sends uplink scheduling signal " UL scheduling grant (UL scheduling grant) " through PDCCH to mobile station UE.
For example, the PDCCH sending part 12 PUSCH resource (for example, subframe and Resource Block, modulation system, encoding rate etc.) of mobile station UE notice having been distributed by PUSCH resource allocation section 11A through uplink scheduling signal " UL scheduling grant ".
In addition, PDCCH sending part 12 PHICH group (second frequency direction resource) and the PHICH sequence (second yard direction resource) that also can change by PHICH resource allocation section 11B mobile station UE notice.
Specifically, under the situation that has changed PHICH group and PHICH sequence through cyclic shift, PDCCH sending part 12 also can be notified this cyclic shift index to mobile station UE through uplink scheduling signal " UL scheduling grant ".
PUSCH acceptance division 13 receives the upstream data. signals of being sent through PUSCH by mobile station UE.
The 14 pairs of mobile station UE of PHICH sending part are sent and are sent to confirmation signal (ACK/NACK) for the upstream data. signals that is received by PUSCH acceptance division 13.
For example shown in Figure 9, in subframe #n, PDCCH sending part 12 sends uplink scheduling signal " UL scheduling grant " via PDCCH to mobile station UE.
But when retransmitting upstream data. signals, under the situation that need not send uplink scheduling signal " UL scheduling grant ", in subframe #n, PHICH sending part 14 sends NACK via PHICH to mobile station UE.
In subframe #n+4, PUSCH acceptance division 13 receives the upstream data. signals of being sent according to this uplink scheduling signal " UL scheduling grant " by mobile station UE through PUSCH.
In subframe #n+8, PHICH sending part 14 sends mobile station UE via PHICH and sends to confirmation signal (ACK/NACK) for the upstream data. signals that is received by PUSCH acceptance division 13.
Thereby PHICH resource allocation section 11B consideration is distributed to and is used for being sent in the Resource Block of subframe #n+4 by the PUSCH of the upstream data. signals of mobile station UE transmission, and the resource that is used for sending at subframe #n+8 the PHICH of confirmation signal is distributed in decision.
In addition, in subframe #n, 12 pairs of mobile station UE notices of PDCCH sending part are used to determine PHICH resource circulation displacement index.
(action of the mobile communication system of first execution mode of the present invention)
Below, the action with reference to Figure 10 illustrates the mobile communication system of this execution mode specifies the action of the wireless base station eNB of this execution mode.
As shown in figure 10, in step S101, the cyclic shift index (cyclic shift amount) of wireless base station eNB decision acquiescence.
Here, the cyclic shift index n that (that is, sends under the situation of uplink scheduling signal " UL scheduling grant ") under the situation of the first transmission of upstream data. signals DMRSBe " 0 ", the cyclic shift index n under the situation of the repeating transmission of upstream data. signals DMRSWith the cyclic shift index n that notifies by the immediate uplink scheduling signal " UL scheduling grant " of same HARQ process DMRSIdentical.
In step S102, wireless base station eNB will be according to the Resource Block number of the Resource Block number minimum that is used for discerning the Resource Block of distributing to PUSCH and the cyclic shift index n that in step S101, determines DMRSAnd the PHICH resource of decision (PHICH group and PHICH sequence) is distributed to each PHICH.
In step S103, wireless base station eNB checks the use number (multiplexing number) of the PHICH sequence in each PHICH group, calculates the mean value N of the PHICH sequence of using in each PHICH group through (formula 2) Tmp
[formula 3]
Figure BDA0000090254990000091
- (type 2)
Here, N PHICH GroupBe the number of PHICH group, N MultiplexedBe illustrated in the number of the PHICH of Resources allocation in the corresponding subframe.
In step S104, wireless base station eNB sets " 0 " to mark (Flag).
In step S105, wireless base station eNB judges whether satisfy condition 1 or one of them of condition 2 in resource allocation control decision condition.
Here, condition 1 is " to exist the number that uses of the PHICH sequence among the PHICH to be N TmpAbove PHICH group, and to have the use number of the PHICH sequence among the PHICH be (N Tmp-2) following PHICH organizes ".
In addition, condition 2 is " in the moment of step S101, have the PHICH group of the conflict that the PHICH resource has taken place, promptly have the PHICH group of a plurality of PHICH having been distributed same PHICH sequence ".
For under the situation of " being ", this action proceeds to step S106, is under the situation of " denying " in step S105 in step S105, and this action proceeds to step S107.
In step S106, wireless base station eNB is to flag settings " 1 ".
In step S107, whether wireless base station eNB judges to flag settings " 1 ".
For under the situation of " being ", this action proceeds to step S108, is under the situation of " denying " in step S107, this release in step S107.
In step S108, wireless base station eNB is according to the PHICH group of the priority decision change object of each PHICH group.
Here; The priority that the PHICH that the conflict of PHICH resource has taken place is organized is made as " 1 "; With the use number of PHICH sequence at most and the priority of having carried out the multiplexing PHICH group of the I/Q of PHICH sequence be made as " 2 ", with the use number of PHICH sequence at most and the priority of not carrying out the multiplexing PHICH group of the I/Q of PHICH sequence be made as " 3 ".
In addition, the PHICH group the highest in priority exists under a plurality of situation, and the PHICH group that wireless base station eNB also can be maximum with the aggregate value of transmitted power is as the PHICH group of change object.
Here, exist a plurality ofly in the highest PHICH of priority group, and the maximum PHICH group of the aggregate value of transmitted power exists under a plurality of situation, and the PHICH group that wireless base station eNB also can be minimum with the PHICH sets of numbers is organized as the PHICH of change object.
In step S109, the PHICH group of wireless base station eNB decision change destination.
For example, the PHICH group that wireless base station eNB also can be minimum with the use number of PHICH sequence is as the PHICH group of change destination.
Here, wireless base station eNB can will not clash the PHICH group of the PHICH group of (conflicting of PHICH resource) as above-mentioned change destination with the PHICH sequence of distributing to other PHICH under the situation of the PHICH sequence in having changed the PHICH group of object yet.
In addition, the PHICH group that wireless base station eNB can be not multiplexing with the I/Q of generation PHICH sequence under the situation of the PHICH sequence in having changed the PHICH group of object yet is as the PHICH group of above-mentioned change destination.
In addition, the PHICH group minimum at the use number of PHICH sequence exists under a plurality of situation, and the PHICH group that wireless base station eNB also can be minimum with the aggregate value of transmitted power is as the PHICH group of change destination.
And then, exist a plurality ofly in the minimum PHICH group of the use number of PHICH sequence, and the minimum PHICH group of the aggregate value of transmitted power exists under a plurality of situation, PHICH group that also can the PHICH sets of numbers is minimum is organized as the PHICH of change destination.
In step S110, wireless base station eNB organizes change one from the PHICH group of change object to the PHICH of change destination with the PHICH resource.
In step S111, wireless base station eNB finishes in the decision condition in resource allocation control, judges whether to satisfy condition 1 or one of them of condition 2.
Here, condition 1 is " to exist the number that uses of the PHICH sequence among the PHICH to be N TmpAbove PHICH group, and to have the use number of the PHICH sequence among the PHICH be (N Tmp-2) following PHICH organizes, and has the PHICH group that can become the PHICH of change destination group ".
In addition, condition 2 is " the PHICH group of the conflict of PHICH resource has taken place in existence, promptly has the PHICH group of a plurality of PHICH having been distributed same PHICH sequence, and has the PHICH group that can become the PHICH of change destination group ".
For under the situation of " being ", step S107 is returned in this action, is under the situation of " denying " in step S111 in step S111, and this action proceeds to step S112.
In step S112, wireless base station eNB is to flag settings " 0 ".
(effect of the mobile communication system of first execution mode of the present invention and effect)
The mobile communication system of first embodiment of the invention; In wireless base station eNB; The PHICH resource that determines according to the cyclic shift index of minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH and acquiescence through cyclic shift change, thus the conflict of above-mentioned PHICH resource can be avoided.
In addition; The mobile communication system of first embodiment of the invention; In wireless base station eNB; In each PHICH group, used under the situation of a plurality of PHICH sequences; The PHICH resource that determines according to the cyclic shift index of minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH and acquiescence through cyclic shift change; Thereby use orthogonal code multiplexing in the PHICH group of PHICH sequence, can reduce the interference volume of intersymbol.
In addition; The mobile communication system of first embodiment of the invention; In wireless base station eNB; In each PHICH group, used under the situation of a plurality of PHICH sequences; The PHICH resource that determines according to the cyclic shift index of minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH and acquiescence through cyclic shift change, thus the transmitted power in the resource element can be converged in the prescribed limit.
The mobile communication system of first embodiment of the invention; In wireless base station eNB; In each PHICH group, carried out under the multiplexing situation of I/Q; The PHICH resource that determines according to the cyclic shift index of minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH and acquiescence through cyclic shift change, thus can reduce from I in opposite directions Q mutually or from the Q influence of the interference that causes of the orthogonality destruction of I phase in opposite directions.
(variation 1)
In the mobile communication system of this variation 1, as shown in figure 11, also can be applied in each and retransmit " frequency hopping (hopping) technology " that regularly change is used to retransmit the PUSCH resource (that is Resource Block) of upstream data. signals.
As this frequency hopping; The known method that is used to retransmit the Resource Block of upstream data. signals according to the change of the change figure (pattern) that is predetermined; With when sending uplink scheduling signal " UL scheduling grant ", notice is used to retransmit the method etc. of change figure of the Resource Block of upstream data. signals.
Thereby, retransmit regularly at each, be used for discerning the minimum Resource Block number change of Resource Block number of the Resource Block of distributing to PUSCH.
Therefore; In the mobile communication system of this variation 1; PHICH resource allocation section 11B is according to the Resource Block number of the Resource Block that is used for discerning the PUSCH resource that is used to retransmit upstream data. signals; Promptly consider to retransmit the minimum Resource Block number of the Resource Block number that is used for discerning the Resource Block of distributing to PUSCH of regularly change at each; To sending the PHICH that sends to confirmation signal, distribute second frequency direction resource and second yard direction resource for the upstream data. signals of retransmitting.
Promptly; PHICH resource allocation section 11B; When in this subframe #n, determining the transmission resource of PHICH; Not only consider to distribute to the Resource Block of the PUSCH that in subframe #n+8, sends; Also consider to be used to discern the repeating transmission of distributing in next time and regularly be subframe #n+16, #n+24 ... minimum Resource Block number in the Resource Block number of the Resource Block of the PUSCH of middle transmission, thereby the distribution of decision PHICH resource.
If the repeating transmission number of times that above-mentioned change figure is promptly considered increases, then the probability of the conflict of PHICH resource generation reduces, and the load of the processing among the wireless base station eNB increases on the other hand.
In addition, if above-mentioned change figure shortens, then under the situation that mobile station UE has increased the repeating transmission number of times of upstream data. signals, the probability that the conflict of PHICH resource takes place increases, but the processing of mobile station UE load reduces.
Like this, the probability of the conflict generation of load of the processing among the wireless base station eNB and PHICH resource is in the relation of compromise.
More than the characteristic of Xu Shu this execution mode also can performance as following.
First characteristic of this execution mode is wireless base station eNB; Its purport is; Comprise: PUSCH resource allocation section 11A, distribute PUSCH resource (upstream data. signals channel resource) to the PUSCH (upstream data. signals channel) of the upstream data. signals of sending mobile station UE; PHICH resource allocation section 11B; According to the Resource Block number (identifying information of upstream data. signals channel resource) of the Resource Block that is used for discerning the PUSCH resource, the PHICH that sends to confirmation signal (sending to the confirmation signal channel) that sends for upstream data. signals is distributed first frequency direction resource and first yard direction resource; And PDCCH sending part 12; To mobile station UE notice PUSCH resource (for example; Subframe and Resource Block); The behaviour in service of the sign indicating number direction resource of PHICH resource allocation section 11B in first frequency direction resource satisfies under the situation of rated condition; With distributing to the frequency direction resource and sign indicating number direction resource of PHICH, change to second frequency direction resource and second yard direction resource from first frequency direction resource and first yard direction resource.
In first characteristic of this execution mode, PDCCH sending part 12 also can be notified second frequency direction resource and second yard direction resource to mobile station UE.
In first feature of present embodiment; The frequency direction resource that can distribute to PHICH is the PHICH group (sending to the confirmation signal channel group) that is made of a plurality of resource element groups; The sign indicating number direction resource that can distribute to PHICH is that PHICH (for example organizes interior orthogonal sequence; The WalshHadamard sequence); PHICH resource allocation section 11B is according to the Resource Block number of the Resource Block that is used for discerning the PUSCH resource; PHICH is distributed first orthogonal sequence in the PHICH group; The behaviour in service of the orthogonal sequence of PHICH resource allocation section 11B in PHICH group satisfies under the situation of rated condition; To distribute to the interior orthogonal sequence of PHICH group of PHICH, first orthogonal sequence in PHICH group changes to second orthogonal sequence in the 2nd PHICH group.
In first characteristic of this execution mode, the orthogonal sequence in PHICH group use number as the situation more than the stated number under, PHICH resource allocation section 11B also can change the PHICH that distributes to PHICH and organize and orthogonal sequence.
In first characteristic of this execution mode, first orthogonal sequence in PHICH group has been assigned under the situation of other PHICH, and PHICH resource allocation section 11B also can change PHICH group and the orthogonal sequence of distributing to PHICH.
In first characteristic of this execution mode; First orthogonal sequence in a PHICH of change object group exists under a plurality of situation, and PHICH resource allocation section 11B also can preferentially change first orthogonal sequence in the PHICH group of distributing to other PHICH.
In first characteristic of this execution mode; First orthogonal sequence in a PHICH of change object group exists under a plurality of situation, and PHICH resource allocation section 11B also can preferentially change the maximum first interior orthogonal sequence of PHICH group of use number of orthogonal sequence.
In first characteristic of this execution mode; Orthogonal sequence in PHICH group reusable to I phase and Q phase; First orthogonal sequence in a PHICH of change object group exists under a plurality of situation, and PHICH resource allocation section 11B also can preferentially change the first interior orthogonal sequence of PHICH group that orthogonal sequence is multiplexed into I phase and Q phase.
In first characteristic of this execution mode; First orthogonal sequence in a PHICH of change object group exists under a plurality of situation, and the PHICH resource allocation section also can preferentially change the maximum first interior orthogonal sequence of PHICH group of aggregate value of transmitted power.
In first characteristic of this execution mode, the PHICH group that PHICH resource allocation section 11B also can be minimum with the aggregate value of transmitted power is organized as the 2nd PHICH.
In first characteristic of this execution mode, PHICH resource allocation section 11B can not organize to the multiplexing PHICH group of I phase and Q phase generation orthogonal sequence under the situation of first orthogonal sequence in having changed PHICH group yet as the 2nd PHICH.
In first characteristic of this execution mode, PHICH resource allocation section 11B can not organize the PHICH group that clashes with the orthogonal sequence of distributing to other PHICH under the situation of first orthogonal sequence in having changed PHICH group yet as the 2nd PHICH.
In first characteristic of this execution mode; PHICH resource allocation section 11B also can be according to the Resource Block number of the Resource Block that is used for discerning the PUSCH resource that is used to retransmit upstream data. signals; To sending the PHICH that sends to confirmation signal, distribute first frequency direction resource and first yard direction resource for the upstream data. signals of having retransmitted.
In addition, the action of above-mentioned wireless base station eNB and mobile station UE can be implemented through hardware, also can implement through the software module of being carried out by processor, can also implement through both combinations.
Software module can be arranged in the storage medium of the such arbitrary form of RAM (random access memory), flash memory, ROM (read-only memory), EPROM (EPROM (Erasable Programmable Read Only Memory)), EEPROM (EEPROM (Electrically Erasable Programmable Read Only Memo)), register, hard disk, removable dish, CD-ROM.
This storage medium is connected to processor, so that this processor can be to this storage medium reading writing information.In addition, this storage medium also can be integrated in the processor.In addition, this storage medium and processor also can be arranged in the ASIC.This ASIC can be arranged in wireless base station eNB and the mobile station UE.In addition, this storage medium and processor also can be used as discrete parts and are arranged in wireless base station eNB and the mobile station UE.
More than, use above-mentioned execution mode to describe the present invention in detail, but to those skilled in the art, should know that the present invention is not limited to execution mode illustrated in this specification.The present invention can be used as and revises and alter mode is implemented and do not exceeded the purport of the present invention and the scope that record determined of claims.Thereby the record purpose of this specification is to illustrate, and has no the meaning of restriction for the present invention.

Claims (13)

1. a wireless base station is characterized in that, comprising:
Upstream data. signals channel resource allocation portion constitutes the upstream data. signals channel allocation upstream data. signals channel resource to the upstream data. signals of sending travelling carriage;
Send to confirmation signal channel resource allocation portion; Constitute identifying information according to said upstream data. signals channel resource, to send for said upstream data. signals send to confirmation signal send to confirmation signal channel allocation first frequency direction resource and first yard direction resource; And
Notice portion notifies said upstream data. signals channel resource to said travelling carriage,
The said confirmation signal channel resource allocation portion that sends to constitutes; The behaviour in service of the sign indicating number direction resource in said first frequency direction resource satisfies under the situation of rated condition; With distributing to the said frequency direction resource and sign indicating number direction resource of sending to the confirmation signal channel, change to second frequency direction resource and second yard direction resource from said first frequency direction resource and said first yard direction resource.
2. wireless base station as claimed in claim 1 is characterized in that,
Said notice portion notifies said second frequency direction resource and said second yard direction resource to said travelling carriage.
3. wireless base station as claimed in claim 1 or 2 is characterized in that,
Can distribute to the said frequency direction resource of sending to the confirmation signal channel and be by what a plurality of resource element groups constituted and send to the confirmation signal channel group,
Can distribute to the said sign indicating number direction resource of sending to the confirmation signal channel is the said orthogonal sequence of sending in the confirmation signal channel group,
The said confirmation signal channel resource allocation portion that sends to constitutes, and according to the identifying information of said upstream data. signals channel resource, the said confirmation signal channel allocation first of sending to is sent to first orthogonal sequence in the confirmation signal channel group,
The said confirmation signal channel resource allocation portion that sends to constitutes; Satisfy under the situation of rated condition in said first behaviour in service of sending to the orthogonal sequence in the confirmation signal channel group; To distribute to the said orthogonal sequence in the confirmation signal channel group of sending to of sending to the confirmation signal channel, change to second second orthogonal sequence of sending in the confirmation signal channel group from said first first orthogonal sequence of sending in the confirmation signal channel group.
4. wireless base station as claimed in claim 3 is characterized in that,
Said first send to orthogonal sequence in the confirmation signal channel group use number as the situation more than the stated number under; The said confirmation signal channel resource allocation portion that sends to constitutes, change distribute to said send to the confirmation signal channel send to confirmation signal channel group and orthogonal sequence.
5. wireless base station as claimed in claim 3 is characterized in that,
Be assigned under other situation of sending to the confirmation signal channel at said first said first orthogonal sequence of sending in the confirmation signal channel group; The said confirmation signal channel resource allocation portion that sends to constitutes, change distribute to said send to the confirmation signal channel send to confirmation signal channel group and orthogonal sequence.
6. wireless base station as claimed in claim 3 is characterized in that,
First first orthogonal sequence of sending in the confirmation signal channel group at the change object exists under a plurality of situation; The said confirmation signal channel resource allocation portion that sends to constitutes, and preferential change has been distributed to other and sent to first of confirmation signal channel and send to first orthogonal sequence in the confirmation signal channel group.
7. wireless base station as claimed in claim 3 is characterized in that,
First first orthogonal sequence of sending in the confirmation signal channel group at the change object exists under a plurality of situation; The said confirmation signal channel resource allocation portion that sends to constitutes, and preferentially changes first maximum first orthogonal sequence of sending in the confirmation signal channel group of use number of orthogonal sequence.
8. wireless base station as claimed in claim 3 is characterized in that,
Said orthogonal sequence is sent in the confirmation signal channel group reusable to I mutually and the Q phase said,
First first orthogonal sequence of sending in the confirmation signal channel group at the change object exists under a plurality of situation; The said confirmation signal channel resource allocation portion that sends to constitutes, and preferentially changes first first orthogonal sequence of sending in the confirmation signal channel group that orthogonal sequence is multiplexed into I phase and Q phase.
9. wireless base station as claimed in claim 3 is characterized in that,
First first orthogonal sequence of sending in the confirmation signal channel group at the change object exists under a plurality of situation; The said confirmation signal channel resource allocation portion that sends to constitutes, and preferentially changes first maximum first orthogonal sequence of sending in the confirmation signal channel group of aggregate value of transmitted power.
10. wireless base station as claimed in claim 3 is characterized in that,
The said confirmation signal channel resource allocation portion that sends to constitutes, and the confirmation signal channel group of sending to that the aggregate value of transmitted power is minimum is sent to the confirmation signal channel group as said second.
11. wireless base station as claimed in claim 3 is characterized in that,
The said confirmation signal channel resource allocation portion that sends to constitutes, not will changed said first send to take place under the situation of said first orthogonal sequence in the confirmation signal channel group orthogonal sequence to I mutually and the multiplexing confirmation signal channel group of sending to of Q phase send to the confirmation signal channel group as said second.
12. wireless base station as claimed in claim 3 is characterized in that,
The said confirmation signal channel resource allocation portion that sends to constitutes, and will not send under the situation of said first orthogonal sequence in the confirmation signal channel group and distribute to the confirmation signal channel group of sending to that other orthogonal sequences of sending to the confirmation signal channel clash and send to the confirmation signal channel group as said second having changed said first.
13. any one the described wireless base station like claim 1 to 12 is characterized in that,
Sending to confirmation signal channel resource allocation portion constitutes; Identifying information according to the said upstream data. signals channel resource that is used to retransmit said upstream data. signals; To send for this upstream data. signals of having retransmitted send to confirmation signal send to the confirmation signal channel, distribute said first frequency direction resource and said first yard direction resource.
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